Sports are by their nature different, albeit similar in nature. They are all competitive. Some are participatory, others are individual sports. But, some sports are so similar to one another that you cannot tell the difference without taking a deep dive into what makes them special. Take softball and baseball.
Sports are known to be problematic for beginner athletes, not to mention professionals. Not everybody has what it takes to survive sports. People have died playing sports, and some while practicing. Depending on the sport, there are possibilities to get severely injured, or only lightly. Baseball has people with bats